Elliot Ness, an ambitious prohibition agent, is determined to take down Al Capone. In order to achieve this goal, he forms a group given the nickname “The Untouchables”.
Based on the true story of would-be Brooklyn bank robbers John Wojtowicz and Salvatore Naturile. Sonny and Sal attempt a bank heist which quickly turns sour and escalates into a hostage situation and stand-off with the police. As Sonny's motives for the robbery are slowly revealed and things become more complicated, the heist turns into a media circus.
New York cop Frank Serpico blows the whistle on the rampant corruption in the force only to have his comrades turn against him.